2026 IRS federal brackets

Federal Income Tax Calculator

A fast, federal-only estimate of your total tax liability — enter your income and filing status to see your bracket, effective rate, and tax owed.

Your Federal Tax Details

Gross Annual Income

Filing Status Deduction Type Itemized Deduction Amount (if applicable)

Pre-Tax Retirement Contributions (401k/IRA, annual)

Total Tax Credits (child tax credit, etc.)

Your Federal Tax Liability

Total Federal Tax Owed

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calculating…

Taxable Income

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Marginal Bracket

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Effective Rate

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After-Tax Income

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⚠️ This calculator estimates federal income tax only — it does not include state tax, FICA, or the Additional Medicare Tax. For a combined federal + state estimate with more deduction detail, use the Income Tax Calculator.

What This Federal Income Tax Calculator Does

This calculator estimates your total federal income tax liability for the year — the actual amount you owe the IRS, not just what's withheld from your paycheck. It's a focused, federal-only tool: enter your gross income, filing status, deduction approach, pre-tax retirement contributions, and any tax credits, and it walks your income through the 2026 progressive federal tax brackets to produce your total tax bill, your marginal bracket, your effective tax rate, and your after-tax income.

This is the calculator to use when you want a clean, fast federal-only number — for estimating quarterly payments, sanity-checking your tax software's output, comparing the impact of increasing a 401(k) contribution, or understanding exactly which bracket your last dollar of income falls into. If you also want state tax included in the same estimate, the site's combined Income Tax Calculator adds state-specific brackets on top of this same federal logic.

How It Works

The calculator follows the same sequence the IRS itself uses to determine tax liability. First, your pre-tax retirement contributions (401(k), traditional IRA, etc.) are subtracted from gross income to arrive at your Adjusted Gross Income (AGI). Next, either the standard deduction for your filing status or your itemized deduction total (whichever you select) is subtracted from AGI to produce taxable income. That taxable income is then run through the 2026 progressive federal brackets — where each portion of your income is taxed only at the rate for that specific bracket, not your entire income at your top rate. Finally, any tax credits you enter are subtracted dollar-for-dollar from the calculated tax to arrive at your final liability.

Formula & Methodology

AGI = Gross Income − Pre-Tax Retirement Contributions

Taxable Income = AGI − (Standard or Itemized Deduction)

Gross Tax = Σ [(Taxable Income in Each Bracket) × (Bracket Rate)]

Total Tax Owed = Gross Tax − Tax Credits

2026 projected standard deductions used: $15,000 (Single), $30,000 (Married Filing Jointly), $15,000 (Married Filing Separately), and $22,500 (Head of Household). The seven federal brackets — 10%, 12%, 22%, 24%, 32%, 35%, and 37% — apply progressively, meaning only the income within each bracket's range is taxed at that bracket's rate.

Tips & Best Practices

Only itemize if it actually beats the standard deduction — enter your itemized total and compare the resulting tax against the standard deduction option to see which produces a lower bill.
Pre-tax retirement contributions are one of the few tools you fully control — increasing your 401(k) or traditional IRA contribution directly lowers your taxable income and, therefore, your federal tax bill dollar for dollar within contribution limits.
Don't confuse tax credits with deductions — a credit reduces your tax bill directly (dollar-for-dollar), while a deduction only reduces the income your tax is calculated on. A $1,000 credit is worth far more than a $1,000 deduction.
Use your marginal rate for decision-making, not your effective rate — when evaluating whether an additional dollar of income, a bonus, or a Roth conversion is worth it, your marginal rate (the rate on your next dollar) is the relevant number, not your average effective rate.
Revisit this calculator whenever your income or filing status changes — a raise, a new job, marriage, or a change in retirement contributions can shift your bracket and change your optimal deduction strategy.

Understanding the Seven Federal Tax Brackets

The U.S. federal income tax system uses seven marginal brackets: 10%, 12%, 22%, 24%, 32%, 35%, and 37%. Each bracket applies only to the slice of income that falls within its range — not to your entire income. For a single filer with $55,000 of taxable income, the first roughly $11,925 is taxed at 10%, the next chunk up to $48,475 is taxed at 12%, and only the remaining amount above that is taxed at 22%. This progressive structure is why your effective tax rate (what you actually pay as a percentage of income) is always lower than your marginal rate (the rate on your last dollar).

Bracket thresholds differ by filing status, with Married Filing Jointly brackets generally set at close to double the Single thresholds for the lower and middle brackets, narrowing at the very top. Head of Household status — available to unmarried taxpayers who pay more than half the cost of keeping up a home for a qualifying person — sits between Single and Married Filing Jointly, offering more favorable brackets than filing Single.

Pre-Tax Contributions vs. Tax Credits: Which Saves More?

It's worth understanding the mechanical difference between the levers in this calculator. Pre-tax retirement contributions reduce your AGI, which then flows through to reduce taxable income — the actual tax savings equal your contribution multiplied by your marginal rate. A $5,000 traditional 401(k) contribution for someone in the 22% bracket saves roughly $1,100 in federal tax. Tax credits, by contrast, reduce your calculated tax bill directly, dollar for dollar, regardless of your bracket — a $2,000 credit always saves exactly $2,000, making credits generally more powerful per dollar than deductions or pre-tax contributions of the same size.

Common Mistakes

Believing your entire income is taxed at your top marginal rate. This is the single most common tax misconception. Only the income within your highest bracket is taxed at that rate — everything below it is taxed at the lower bracket rates that apply to those portions.
Forgetting FICA is separate from federal income tax. Social Security and Medicare (7.65% combined) are calculated independently of your federal income tax bracket and aren't included in this calculator's federal tax liability estimate.
Double-counting pre-tax contributions. If you already subtracted your 401(k) contribution from the "gross income" you entered, don't also enter it in the pre-tax contributions field — that will understate your taxable income.
Assuming withholding equals your final tax liability. This calculator estimates your actual annual tax bill. What was withheld from your paychecks throughout the year is a separate number — compare the two to determine if you'll owe or get a refund.

Frequently Asked Questions

What's the difference between this and the Income Tax Calculator?

This calculator is federal-only for a fast, focused estimate. The site's Income Tax Calculator adds state-specific tax brackets on top of the same federal logic for a combined federal-plus-state total.

What is the difference between marginal and effective tax rate?

Marginal rate is the rate applied to your last (highest) dollar of taxable income. Effective rate is your total tax divided by your total income. Because lower brackets are taxed at lower rates, your effective rate is always lower than your marginal rate.

Should I itemize or take the standard deduction?

Take whichever produces a larger deduction. If your itemizable expenses (mortgage interest, state and local taxes up to $10,000, charitable donations, and qualifying medical expenses) exceed your standard deduction, itemizing saves more tax.

Does this calculator include the Child Tax Credit?

You can include it manually in the "Total Tax Credits" field. For a dedicated calculation of your exact Child Tax Credit amount including phase-outs, use the Child Tax Credit Calculator.

How is AGI different from taxable income?

AGI (Adjusted Gross Income) is your income after specific above-the-line adjustments like retirement contributions, but before the standard or itemized deduction is applied. Taxable income is AGI minus that deduction — it's always a smaller number than AGI.

Why does my after-tax income look lower than expected?

After-tax income in this calculator subtracts both your federal tax and your pre-tax retirement contributions from gross income, since that contributed money isn't available to spend even though it reduces your tax bill.

Related Calculators

For a combined federal-plus-state estimate, use the Income Tax Calculator or Tax Calculator. To check your paycheck withholding specifically, try the Federal Tax Withholding Calculator or W-4 Calculator. See whether you'll owe or receive a refund with the Tax Refund Calculator. Parents should also check the Child Tax Credit Calculator and eligible workers the Earned Income Tax Credit Calculator for credits not included in this base estimate.